Bar code scanners are designed to read imprinted bar / matrix code symbologies.

Slot card bar code scanners are designed to read imprinted bar code cards that are passed through the aperture on the reader

Bar code software identifies or decodes bar code symbology, generates output strings corresponding to barcode values, creates bar code fonts, prints bar codes, and/or performs tracking, etc

Bar code cards are computer boards that contain storage, font macros, and logic for printing barcodes

Digital bargraphs measure process and electrical variables such as pressure, flow, temperature, speed, current, and voltage.

Ink jet printers project electrically charged droplets of ink onto a page.

Machine vision systems are used for automated inspection and measurement in production environments.